题目内容
从进入机房起供电系统的中性线(N线)与保护线(PE线)应始终分开。
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通电之后，机房电源箱必须挂牌上锁。
某超市收银员小孙由于内急，就匆忙把刚收进了三张百元大钞，向收银机的抽屉里一塞，跟旁边收银台的同事打了一个招呼，锁上了收银台就去上厕所了，其中几张大钞的角露在了收银台抽屉的外面。结果等她上厕所回来发现露出角的几张大钞已全部被偷。请问：这说明了什么问题？
____'s poem “The Convergence of the Twain,” which is about the Titanic disaster, illustrates the perversity of fate, the disastrous or ironic coincidence of events.
the beautiful actor and Irish nationalist Maud Gonne, with whom W. B. Yeats was desperately in love for many years, but who persistently refused to marry him. She became the subject of many of his early love poems, such as ____, “No Second Troy” and “A Prayer for My Daughter.”
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